| |
| Web URL(s): | https://academic.oup.com/aob/article/88/5/893/2587172/
Last checked: 03/01/2017
Requires: PDF Reader |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Rademacher, Ingo F.;
Nelson, C. Jerry |
|---|
| Author Affiliation: | Rademacher: Institut für Pflanzenbau, Universität Bonn, Katzenburgweg, Bonn, Germany; and Nelson: Department of Agronomy, University of Missouri, Columbia, MO |
|---|
| Title: | Nitrogen effects on leaf anatomy within the intercalary meristems of tall fescue leaf blades |
|---|
| Section: | Original articles
Other records with the "Original articles" Section
|
|---|
| Source: | Annals of Botany. Vol. 88, No. 5, November 2001, p. 893-903. |
|---|
| Publishing Information: | London, Oxford University Press |
|---|
| # of Pages: | 11 |
|---|
| Keywords: | TIC Keywords: Nitrogen; Leaves; Plant anatomy; Intercalary meristems; Festuca arundinacea; Vertical shoot growth; Mesophyll; Growth; Genotypes; Leaf thickness; Leaf blade length
|
|---|
| Abstract/Contents: | "Longitudinal elongation contributes most to leaf area expansion of grasses and its rate is known to be strongly affeted by N. Our objective was to determine the effect of two N regimes (N0 and N+) on the gradient of leaf tissue formation in meristems of two contrasting tall fescue (Festuca arundinacea Schreb.) genotypes. Proportions of epidermal, mesophyll and vascular tissue as well as intercellular air space were determined throughout the base of actively elongating leaves. The area of leaf transverse sections nearly doubled between the ligule and the distal end of the growth zone (about 30 mm), and was mainly associated with lateral epidermal and mesophyll cell division in the proximal 5·0-7·5 mm. Further increase in transverse area was due to the formation of intercellular airspace and transverse expansion of epidermal cells. Depending on genotype and N treatment the mesophyll, epidermis, vascular bundles and air space comprised 45-54%, 20-28%, 6-9% and 17-21%, respectively, of transverse leaf area in the distal part of the growth zone. After a sligt increase close to the leaf base, the area of vascular tissue remained constant throughout the growth zone. The proportion of air space to mesophyll space was higher at N0 than at N+ because mesophyll area was enhanced by N+ to a greater degree than by N0. In the genotype with slow leaf elongation, the increase in cross-sectional area was due to an increase in both leaf width and leaf thickness. In the genotype which had faster leaf elongation and wider leaves, only leaf thickness was enhanced by N+." |
|---|
| Language: | English |
|---|
| References: | 49 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rademacher, I. F., and C. J. Nelson. 2001. Nitrogen effects on leaf anatomy within the intercalary meristems of tall fescue leaf blades. Ann. Bot. 88(5):p. 893-903. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=77116 |
| If there are problems with this record, send us feedback about record 77116. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://academic.oup.com/aob/article/88/5/893/2587172/
Last checked: 03/01/2017
Requires: PDF Reader |
| 
MSU catalog number: QK 1 .A53 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
